diff -r 000000000000 -r 6474c204b198 gfx/skia/trunk/src/core/SkCoreBlitters.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gfx/skia/trunk/src/core/SkCoreBlitters.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,184 @@
+/*
+ * Copyright 2006 The Android Open Source Project
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef SkCoreBlitters_DEFINED
+#define SkCoreBlitters_DEFINED
+
+#include "SkBitmapProcShader.h"
+#include "SkBlitter.h"
+#include "SkBlitRow.h"
+#include "SkShader.h"
+#include "SkSmallAllocator.h"
+
+class SkRasterBlitter : public SkBlitter {
+public:
+    SkRasterBlitter(const SkBitmap& device) : fDevice(device) {}
+
+protected:
+    const SkBitmap& fDevice;
+
+private:
+    typedef SkBlitter INHERITED;
+};
+
+class SkShaderBlitter : public SkRasterBlitter {
+public:
+    SkShaderBlitter(const SkBitmap& device, const SkPaint& paint);
+    virtual ~SkShaderBlitter();
+
+protected:
+    uint32_t    fShaderFlags;
+    SkShader*   fShader;
+
+private:
+    // illegal
+    SkShaderBlitter& operator=(const SkShaderBlitter&);
+
+    typedef SkRasterBlitter INHERITED;
+};
+
+///////////////////////////////////////////////////////////////////////////////
+
+class SkA8_Coverage_Blitter : public SkRasterBlitter {
+public:
+    SkA8_Coverage_Blitter(const SkBitmap& device, const SkPaint& paint);
+    virtual void blitH(int x, int y, int width) SK_OVERRIDE;
+    virtual void blitAntiH(int x, int y, const SkAlpha antialias[], const int16_t runs[]) SK_OVERRIDE;
+    virtual void blitV(int x, int y, int height, SkAlpha alpha) SK_OVERRIDE;
+    virtual void blitRect(int x, int y, int width, int height) SK_OVERRIDE;
+    virtual void blitMask(const SkMask&, const SkIRect&) SK_OVERRIDE;
+    virtual const SkBitmap* justAnOpaqueColor(uint32_t*) SK_OVERRIDE;
+};
+
+class SkA8_Blitter : public SkRasterBlitter {
+public:
+    SkA8_Blitter(const SkBitmap& device, const SkPaint& paint);
+    virtual void blitH(int x, int y, int width);
+    virtual void blitAntiH(int x, int y, const SkAlpha antialias[], const int16_t runs[]);
+    virtual void blitV(int x, int y, int height, SkAlpha alpha);
+    virtual void blitRect(int x, int y, int width, int height);
+    virtual void blitMask(const SkMask&, const SkIRect&);
+    virtual const SkBitmap* justAnOpaqueColor(uint32_t*);
+
+private:
+    unsigned fSrcA;
+
+    // illegal
+    SkA8_Blitter& operator=(const SkA8_Blitter&);
+
+    typedef SkRasterBlitter INHERITED;
+};
+
+class SkA8_Shader_Blitter : public SkShaderBlitter {
+public:
+    SkA8_Shader_Blitter(const SkBitmap& device, const SkPaint& paint);
+    virtual ~SkA8_Shader_Blitter();
+    virtual void blitH(int x, int y, int width);
+    virtual void blitAntiH(int x, int y, const SkAlpha antialias[], const int16_t runs[]);
+    virtual void blitMask(const SkMask&, const SkIRect&);
+
+private:
+    SkXfermode* fXfermode;
+    SkPMColor*  fBuffer;
+    uint8_t*    fAAExpand;
+
+    // illegal
+    SkA8_Shader_Blitter& operator=(const SkA8_Shader_Blitter&);
+
+    typedef SkShaderBlitter INHERITED;
+};
+
+////////////////////////////////////////////////////////////////
+
+class SkARGB32_Blitter : public SkRasterBlitter {
+public:
+    SkARGB32_Blitter(const SkBitmap& device, const SkPaint& paint);
+    virtual void blitH(int x, int y, int width);
+    virtual void blitAntiH(int x, int y, const SkAlpha antialias[], const int16_t runs[]);
+    virtual void blitV(int x, int y, int height, SkAlpha alpha);
+    virtual void blitRect(int x, int y, int width, int height);
+    virtual void blitMask(const SkMask&, const SkIRect&);
+    virtual const SkBitmap* justAnOpaqueColor(uint32_t*);
+
+protected:
+    SkColor                fColor;
+    SkPMColor              fPMColor;
+    SkBlitRow::ColorProc   fColor32Proc;
+    SkBlitRow::ColorRectProc fColorRect32Proc;
+
+private:
+    unsigned fSrcA, fSrcR, fSrcG, fSrcB;
+
+    // illegal
+    SkARGB32_Blitter& operator=(const SkARGB32_Blitter&);
+
+    typedef SkRasterBlitter INHERITED;
+};
+
+class SkARGB32_Opaque_Blitter : public SkARGB32_Blitter {
+public:
+    SkARGB32_Opaque_Blitter(const SkBitmap& device, const SkPaint& paint)
+        : INHERITED(device, paint) { SkASSERT(paint.getAlpha() == 0xFF); }
+    virtual void blitMask(const SkMask&, const SkIRect&);
+
+private:
+    typedef SkARGB32_Blitter INHERITED;
+};
+
+class SkARGB32_Black_Blitter : public SkARGB32_Opaque_Blitter {
+public:
+    SkARGB32_Black_Blitter(const SkBitmap& device, const SkPaint& paint)
+        : INHERITED(device, paint) {}
+    virtual void blitAntiH(int x, int y, const SkAlpha antialias[], const int16_t runs[]);
+
+private:
+    typedef SkARGB32_Opaque_Blitter INHERITED;
+};
+
+class SkARGB32_Shader_Blitter : public SkShaderBlitter {
+public:
+    SkARGB32_Shader_Blitter(const SkBitmap& device, const SkPaint& paint);
+    virtual ~SkARGB32_Shader_Blitter();
+    virtual void blitH(int x, int y, int width) SK_OVERRIDE;
+    virtual void blitV(int x, int y, int height, SkAlpha alpha) SK_OVERRIDE;
+    virtual void blitRect(int x, int y, int width, int height) SK_OVERRIDE;
+    virtual void blitAntiH(int x, int y, const SkAlpha[], const int16_t[]) SK_OVERRIDE;
+    virtual void blitMask(const SkMask&, const SkIRect&) SK_OVERRIDE;
+
+private:
+    SkXfermode*         fXfermode;
+    SkPMColor*          fBuffer;
+    SkBlitRow::Proc32   fProc32;
+    SkBlitRow::Proc32   fProc32Blend;
+    bool                fShadeDirectlyIntoDevice;
+    bool                fConstInY;
+
+    // illegal
+    SkARGB32_Shader_Blitter& operator=(const SkARGB32_Shader_Blitter&);
+
+    typedef SkShaderBlitter INHERITED;
+};
+
+///////////////////////////////////////////////////////////////////////////////
+
+/*  These return the correct subclass of blitter for their device config.
+
+    Currently, they make the following assumptions about the state of the
+    paint:
+
+    1. If there is an xfermode, there will also be a shader
+    2. If there is a colorfilter, there will be a shader that itself handles
+       calling the filter, so the blitter can always ignore the colorfilter obj
+
+    These pre-conditions must be handled by the caller, in our case
+    SkBlitter::Choose(...)
+ */
+
+SkBlitter* SkBlitter_ChooseD565(const SkBitmap& device, const SkPaint& paint,
+                                SkTBlitterAllocator* allocator);
+
+#endif